Verse 21

यथालोकेन दीपस्य किरणैर् भास्करस्य च ।ज्ञायते दिग्विभागादि तद्वच् छक्त्या शिवः प्रिये

In plain words

As the division of the directions and the rest is known by a lamp’s light and by the sun’s rays, so is known through , beloved.